Saliva test proves that the bats cycle through Arizona and consider the region their part-time home
Nearly 14% of schoolchildren have vaccine exemptions, far more than state and national averages
The halo encircles a galaxy 590 million light-years away, considered close by cosmic standards
Just 10 of nearly 200 countries required under the Paris Agreement to deliver fresh climate plans by Feb. 10 did so on time
Climate change is rapidly altering the Arctic region, creating environmental danger, economic opportunity and geopolitical tension as the world’s major powers scramble to control newly accessible shipping lanes and resource deposits.
China, India, Japan and the US have pledged support
New York's governor says there's no immediate threat to public health; no cases of avian flu have been detected among humans in New York
The flu has forced schools to shut down in some states
Clinics, their clients say a withdrawal of US aid toward fighting HIV could set back years of progress
Genome sequencing of milk from Nevada has identified a different strain of bird flu in dairy cows for the first time, the USDA says
The decision is based on 'profound differences in health management, especially during the pandemic'
Scientists are testing a novel technique to deter poachers targeting endangered rhinos for their prized horns: injecting radioactive pellets into the horns so there is less demand for them on the black market. Marize de Klerk reports from the Waterberg Biosphere Reserve in South Africa.
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